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Avatar for ALO Radon

ALO Radon

5.00(
25
)
Approved Pro

ALO Radon

5.00(
25
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
5 years of experience

With over 7 years of experience the testing and mitigation industry, ALO Radon is your industry leader in the Spearfish area and all the surrounding areas. We pride ourselves on our extreme professionalism and attention to detail. As a family owned & operated business, you can trust we will treat your project as we would treat our own. Our customer satisfaction guarantee will assure you that we will not leave your property until you are completely satisfied with our work. Give us a call today, we look forward to working with you!

"What a relief to find Anthony and ALO. After a mail-in radon test revealed extremely high levels of radon, we called The Big Guys in town. Do not get me started? .luckily I called ALO next. Their price was MUCH more reasonable and they scheduled me 5 days out! Anthony was great at keeping us informed re: times. He also made it clear that he would start with a basic mitigation package, and if the radon levels were still too high, they would then start adding more expensive fans/additional suction points, etc. There was an up front price list for all these options. Thankfully after 2 days, the work was done and tests soon revealed nearly non-existent radon! I highly recommend these guys."

Jason B on January 2025

With over 7 years of experience the testing and mitigation industry, ALO Radon is your industry leader in the Spearfish area and all the surrounding areas. We pride ourselves on our extreme professionalism and attention to detail. As a family owned & operated business, you can trust we will treat your project as we would treat our own. Our customer satisfaction guarantee will assure you that we will not leave your property until you are completely satisfied with our work. Give us a call today, we look forward to working with you!

"What a relief to find Anthony and ALO. After a mail-in radon test revealed extremely high levels of radon, we called The Big Guys in town. Do not get me started? .luckily I called ALO next. Their price was MUCH more reasonable and they scheduled me 5 days out! Anthony was great at keeping us informed re: times. He also made it clear that he would start with a basic mitigation package, and if the radon levels were still too high, they would then start adding more expensive fans/additional suction points, etc. There was an up front price list for all these options. Thankfully after 2 days, the work was done and tests soon revealed nearly non-existent radon! I highly recommend these guys."

Jason B on January 2025


Avatar for Blackburn Foundation Repair, LLC

Blackburn Foundation Repair, LLC

4.64(
21
)
Approved Pro

Blackburn Foundation Repair, LLC

4.64(
21
)
Approved Pro
Customers say: Quality work
33 years of experience
Free onsite estimate

Blackburn Basement Systems has been providing the best in basement waterproofing, crawl space and foundation repair, concrete leveling, and radon mitigation in South Dakota, and Eastern Wy, since 1992. We offer a variety of solutions for the multitude of issues that result from below grade construction throughout South Dakota. Thousands of homes, businesses and government agencies have been serviced by our trained professional installers throughout South Dakota, and Eastern Wy. We are proud to say we have 500 reviews with 4.8 stars!

"Went through them for wall braces which the job was horrible. Then the final price was 3000 more then what my quote was. I do not recommend them for a first choice. "

Matt W on November 2025

Blackburn Basement Systems has been providing the best in basement waterproofing, crawl space and foundation repair, concrete leveling, and radon mitigation in South Dakota, and Eastern Wy, since 1992. We offer a variety of solutions for the multitude of issues that result from below grade construction throughout South Dakota. Thousands of homes, businesses and government agencies have been serviced by our trained professional installers throughout South Dakota, and Eastern Wy. We are proud to say we have 500 reviews with 4.8 stars!

"Went through them for wall braces which the job was horrible. Then the final price was 3000 more then what my quote was. I do not recommend them for a first choice. "

Matt W on November 2025


Avatar for Rapid Radon Removal

Rapid Radon Removal

5.00(
2
)
Approved Pro

Rapid Radon Removal

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

We're a locally owned and operated company with over 10 years of industry experience. We value honesty and integrity and stand behind our work. We specialize in a variety of residential and commercial testing services. We've earned a solid reputation for testing and mitigation. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

"Jeff is very knowledgeable and thorough about radon removal. He is highly qualified in radon mitigation and has extensive experience with construction. Very personable, considerate, and responsive. I highly recommend him and will do so for all my friends."

Erica H on May 2021

We're a locally owned and operated company with over 10 years of industry experience. We value honesty and integrity and stand behind our work. We specialize in a variety of residential and commercial testing services. We've earned a solid reputation for testing and mitigation. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

"Jeff is very knowledgeable and thorough about radon removal. He is highly qualified in radon mitigation and has extensive experience with construction. Very personable, considerate, and responsive. I highly recommend him and will do so for all my friends."

Erica H on May 2021


Avatar for Black Hills Radon

Black Hills Radon

New on AngiNew on Angi
Approved Pro

Black Hills Radon

New on AngiNew on Angi
Approved Pro
3 years of experience
Free onsite estimate

Black Hills Radon is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Black Hills Radon is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.


Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018


Breen & Associates, LLC

4.62(
13
)

Breen & Associates, LLC

4.62(
13
)
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

Breen & Associates is a Professional Home Inspection Service Company. Including, but not limited to, Radon Testing, Water Tests, Infrared Thermal Imaging, Pest Inspection and all things involving a Full Service General Home Inspection. Over 85 years of family experience in the home inspection business. Over 13 years experience in residential home construction.

Breen & Associates is a Professional Home Inspection Service Company. Including, but not limited to, Radon Testing, Water Tests, Infrared Thermal Imaging, Pest Inspection and all things involving a Full Service General Home Inspection. Over 85 years of family experience in the home inspection business. Over 13 years experience in residential home construction.


Avatar for SHIELD RADON MITIGATION

SHIELD RADON MITIGATION

No reviews yet

SHIELD RADON MITIGATION

No reviews yet
2 years of experience

We offer Radon testing and foundation based radon mitigation. We are dedicated to providing homeowners peace of mind through reliable radon mitigation services. Our mission is to create healthy living environments with clear communication and exceptional customer service. We also offer free radon testing. We don't just end after installation. We come back for future additional testing to ensure we have lowered the radon levels in your home. Jamie Steele, owner and operator, has been in the radon mitigation industry for 5+ years and has desire to help home owners and renters live in a healthy environment. Jamie has also been in the construction industry his entire adult life and knows the ins and outs of how to apply a system in your home with the least amount of changes possible.

We offer Radon testing and foundation based radon mitigation. We are dedicated to providing homeowners peace of mind through reliable radon mitigation services. Our mission is to create healthy living environments with clear communication and exceptional customer service. We also offer free radon testing. We don't just end after installation. We come back for future additional testing to ensure we have lowered the radon levels in your home. Jamie Steele, owner and operator, has been in the radon mitigation industry for 5+ years and has desire to help home owners and renters live in a healthy environment. Jamie has also been in the construction industry his entire adult life and knows the ins and outs of how to apply a system in your home with the least amount of changes possible.


Avatar for Pillar To Post

Pillar To Post

No reviews yet

Pillar To Post

No reviews yet
3 years of experience

Top nationwide franchise owned and operated by Andrew Webster. We cover home inspections and have 3 packages to choose from for service and cost. We also can test for Radon, Water Quality, Mold and meth use in the home. Our goal is 100% customer satisfaction, and we also have 1 million dollars in error and omissions by the contractor, client and agent. Since opening in December 2022, we have had nothing but 5-star reviews internally and on google.

Top nationwide franchise owned and operated by Andrew Webster. We cover home inspections and have 3 packages to choose from for service and cost. We also can test for Radon, Water Quality, Mold and meth use in the home. Our goal is 100% customer satisfaction, and we also have 1 million dollars in error and omissions by the contractor, client and agent. Since opening in December 2022, we have had nothing but 5-star reviews internally and on google.

Radon Detection and Reduction questions, answered by experts

What is radon? It’s a radioactive gas that naturally occurs in the ground, forming as uranium and thorium decay. It has no color or odor, so you don’t know if it’s seeping into your building’s foundation. Regular exposure to radon gas increases your chances of suffering from lung cancer. Radon testing measures the air inside your house for the presence of radon gas. If detected, the test will measure the severity of radon levels in your home’s air.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

It is possible to test for radon yourself using DIY radon test kits, but these at-home test kits should never be a replacement for professional radon testing. DIY test kits can provide some information about radon exposure in your house, but your indoor temperature and humidity can affect the results, as can improper usage of the test kit. You could save yourself some money by hiring a radon professional to begin with, and when it comes to your family’s safety, hiring an experienced professional to do the testing is usually the best option.

Mitigation reduces radon levels, protecting your health and complying with safety standards.

Through air sampling devices and surface swabs in key areas of concern.

The Nemo, SD homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.

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